Barbie Furniture - Trampoline and Work-Out Accessories for Fashion Dolls via Etsy. mini trampoline to actually bounce! It measures 5-3/4" in diameter. Exercise mat measures 4-1/4" x 10" and folds to 1/3 it's size. Towel is made of terrycloth and is 5"x 9". Duffel bag has handles for easy doll shoulder carrying.